Friday, February 18, 2011
Another historic grow
Today I began another historic grow, historic in terms of the varieties that is. These are the seedlings from yesterday's post, and it is exactly two weeks from the date the seed packages were unsealed.
I am using a red/blue 90 watt LED with a 16 hour photoperiod. The light is 19" above the plant surfaces with the intensity, measured at plant level, ranging between 1,500 and 2,000 footcandles.
The nutrient feed cycle is 15 minutes every four hours, with a TDS of 711, and a pH of 6.4. Additionally, I am dribbling CO2 into the grow tank during the lighting cycle.
Now to the historic aspect, the varieties are:
Tom Thumb (1850s) A small growing green lettuce with heads that only get 3-4" across. Very tasty! Crisphead type.